Hot Rolled Steel Round Bar 6mm-150mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 100000 m.t./month
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Specifications of Chinese Standard Round Bar
1. Grade: Q195, Q235, Q345
2. Diameter: 6mm-150mm
3. Length: 6m, 9m, 12m or as customer’s request
4. Tolerance: Within ±5% for weight; ±2mm for diameter
5. Note: The price can be better is the quantity is good
6. Chemical composition
Alloy No | Element (%) | ||||
C | Mn | S | P | Si | |
Q195 | 0.06-0.12 | 0.25 | ≤0.05 | ≤0.045 | ≤0.3 |
Q235 | 0.12—0.20 | 0.3—0.7 | ≤0.045 | ≤0.045 | ≤0.3 |
Q345 | ≤0.2 | 1.00-1.60 | ≤0.045 | ≤0.045 | ≤0.55 |
Usage and Applications of Chinese Standard Round Bar
1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Steel round bar is used in construction and a large number of architectural and engineering structures.
Packaging & Delivery of Chinese Standard Round Bar
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 45 days
Trade terms: FOB, CFR, CIF
MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
Production Flow of Chinese Standard Round Bar
1. The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process.
2. Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation
Characteristics of Chinese Standard Round Bar
1. The steel in which the main interstitial alloying constituent is carbon in the range of 0.12–2.0%.
2. As the carbon percentage content rises, steel has the ability to become harder and stronger through heat treating; however it becomes less ductile.
3. Quality should be in conformity with the specification of the manufacturer. Quantity and packing conditions should be in conformity with the term in the contract.
4. Regardless of the heat treatment, higher carbon content reduces weld ability. In carbon steels, the higher carbon content lowers the melting point.
- Q: What are the different surface conditions for steel round bars?
- Steel round bars can come in a variety of surface conditions depending on their intended use and manufacturing process. Some common surface conditions for steel round bars include: 1. Hot Rolled: This is the most common surface condition for steel round bars. It is achieved by heating the steel above its recrystallization temperature and then rolling it through a series of hot rolling mills. This process gives the steel a rough surface with a scale layer that needs to be removed. 2. Cold Drawn: In this surface condition, the steel round bars are pulled through a die at room temperature, which results in a smoother and more precise surface finish. Cold drawn bars have improved dimensional accuracy and surface quality compared to hot rolled bars. 3. Peeled: Steel round bars can also be peeled to remove the scale layer and achieve a smooth surface finish. This process involves rotating the bar against a cutting tool, which results in a clean and bright surface. 4. Ground: Grinding is another method used to achieve a smooth surface finish on steel round bars. It involves removing material from the surface using abrasive belts or wheels, resulting in a precise and consistent surface. 5. Polished: Polishing is a surface treatment that further enhances the appearance and smoothness of steel round bars. It involves using abrasive compounds and buffing wheels to create a reflective and mirror-like finish. 6. Coated: Steel round bars can be coated with various materials to improve their corrosion resistance or enhance their appearance. Common coatings include zinc, chrome, nickel, and various types of paint. The choice of surface condition for steel round bars depends on the specific application and the desired properties. Each surface condition offers different advantages in terms of appearance, corrosion resistance, and mechanical properties.
- Q: What is the difference between a rough turned and a seamless steel round bar?
- A rough turned steel round bar refers to a metal bar that has undergone a preliminary turning process, where excess material is removed to achieve a rougher surface finish. This process helps to create a more uniform diameter and removes any surface imperfections or irregularities. Rough turned bars are commonly used in applications where a smooth surface finish is not a requirement, such as in manufacturing machinery or agricultural equipment. On the other hand, a seamless steel round bar is a solid metal bar that is formed without any welding or seams. It is manufactured through a process called piercing, where a solid billet is heated and then pierced with a mandrel to create a hollow tube. The tube is then elongated and reduced in diameter through a series of rolling and drawing processes until it reaches the desired dimensions. Seamless round bars are known for their superior strength and resistance to corrosion, making them suitable for applications where a high level of performance is required, such as in the oil and gas industry or automotive manufacturing. In summary, the main difference between a rough turned and a seamless steel round bar lies in their manufacturing processes and surface finishes. Rough turned bars are created by removing excess material to achieve a rougher surface finish, while seamless bars are formed without any welding or seams, resulting in a smooth and continuous surface.
- Q: Can steel round bars be used in the construction industry?
- Yes, steel round bars can be commonly used in the construction industry. They are versatile and widely used for various structural applications. Steel round bars offer high strength and durability, making them suitable for supporting heavy loads and providing structural stability in buildings, bridges, and other construction projects. They can be used as reinforcement in concrete structures, such as columns, beams, and slabs, to enhance their strength and resist bending or cracking. Additionally, steel round bars are often utilized in the fabrication of steel frameworks, scaffolding, and other support systems in the construction industry. Their availability in different sizes and grades allows for flexibility in meeting specific construction requirements. Overall, steel round bars are a vital component in the construction industry due to their strength, versatility, and ability to withstand demanding conditions.
- Q: Can steel round bars be used in the production of couplings?
- Yes, steel round bars can be used in the production of couplings. Steel round bars provide strength, durability, and stability, making them suitable for use in various applications, including couplings.
- Q: What is the difference between a solid round bar and a hollow round bar?
- A solid round bar is a cylindrical shape made entirely of a single material, typically metal or plastic, with a solid core throughout its entire length. It has a consistent diameter from one end to the other and does not have any empty space inside. On the other hand, a hollow round bar also has a cylindrical shape but contains a hollow space in its center. This hollow space creates an empty tube-like structure within the bar. The diameter of the outer surface remains consistent, but the inner diameter will vary depending on the specific design and intended use of the hollow round bar. The main difference between a solid round bar and a hollow round bar lies in their structural characteristics and potential applications. A solid round bar offers high strength and rigidity due to its solid core, making it suitable for applications that require robust support or load-bearing capabilities. It is commonly used in construction, manufacturing, and engineering projects where strength and durability are crucial. On the other hand, a hollow round bar provides a unique combination of strength and lightweight properties. The presence of the hollow space reduces the overall weight of the bar while still maintaining structural integrity. This makes hollow round bars ideal for applications where weight reduction is a priority, such as in aerospace, automotive, and marine industries. Additionally, the hollow space can be utilized for various purposes, such as passing fluids, wires, or other components through the bar. In summary, while both solid and hollow round bars share a cylindrical shape, the presence or absence of a hollow space differentiates them. Solid round bars offer strength and rigidity, while hollow round bars provide a balance between strength and reduced weight, along with the potential for additional functionality. The choice between the two depends on the specific requirements and intended application of the bar.
- Q: Can steel round bars be used in the manufacturing of fasteners?
- Yes, steel round bars can be used in the manufacturing of fasteners. Round bars can be machined or forged into various types of fasteners such as bolts, screws, and pins. The use of steel round bars provides strength, durability, and resistance to corrosion, making them suitable for fastening applications in various industries.
- Q: Can steel round bars be used for making valves or fittings?
- Yes, steel round bars can be used for making valves or fittings. Steel round bars offer excellent strength, durability, and corrosion resistance, making them suitable for various applications in the manufacturing of valves and fittings. They can be easily machined, welded, and fabricated to meet specific design requirements, ensuring reliable and long-lasting performance in valve and fitting systems.
- Q: What is the typical lead time for manufacturing steel round bars?
- The lead time for manufacturing steel round bars can vary depending on different factors, including the bars' size and quantity, the complexity of the manufacturing process, and the manufacturer's production capacity. Typically, manufacturing steel round bars takes anywhere from a few days to several weeks. When it comes to standard sizes and quantities, the lead time is usually shorter since manufacturers keep them in stock. However, custom orders or larger quantities require additional processes such as sourcing raw materials, cutting, heat treating, and quality control checks, which can extend the lead time. It's important to consider that market demand and the manufacturer's production schedule can also impact lead times. During periods of high demand or limited production capacity, lead times may be longer. Conversely, during times of low demand or surplus production capacity, lead times can be shorter. To get an accurate estimate of the lead time for manufacturing steel round bars, it is recommended to directly contact specific manufacturers or suppliers. They will be able to provide more precise information based on their capabilities and current workload.
- Q: Can steel round bars be used for making camshafts?
- Camshafts can indeed be made using steel round bars. In fact, steel is a widely used material for camshaft production because of its exceptional strength, durability, and resistance to wear and fatigue. By machining and shaping steel round bars, they can be transformed into the desired profile, which makes them ideal for manufacturing camshafts. These camshafts are crucial components in internal combustion engines. The specific type of steel chosen will depend on the application and performance requirements. Typically, alloy steels or carbon steels with superior mechanical properties are used. In summary, steel round bars provide a reliable and cost-effective option for producing camshafts that can endure the demanding conditions of engine operation.
- Q: Can steel round bars be used for making body panels?
- No, steel round bars are not typically used for making body panels. Body panels are usually made from sheet metal or aluminum, as they offer better flexibility, ease of shaping, and weight reduction compared to steel round bars.
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Hot Rolled Steel Round Bar 6mm-150mm
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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